CN201215086Y - Vacuum pump - Google Patents
Vacuum pump Download PDFInfo
- Publication number
- CN201215086Y CN201215086Y CNU2008201081063U CN200820108106U CN201215086Y CN 201215086 Y CN201215086 Y CN 201215086Y CN U2008201081063 U CNU2008201081063 U CN U2008201081063U CN 200820108106 U CN200820108106 U CN 200820108106U CN 201215086 Y CN201215086 Y CN 201215086Y
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- rotor
- pump
- blade
- pump housing
- vacuum pump
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Abstract
The utility model discloses a vacuum pump, in particular to a cylindrical rotary vane vacuum pump. The rotor of the pump is embedded on a main shaft; the eccentric position of the rotor in the pump body is determined through a positioning pin on the pump body; a plurality of cylindrical rotary vane are installed on the rotor, which are respectively installed in the grooves arranged on the rotor in the radial direction, and can freely rotate and move in the grooves; the axial both ends of the cylindrical rotary vane are respectively clipped between the pump cover and the bottom surface of the pump body; permanent magnet material is axially embedded on each rotary vane; the installation direction of the permanent magnet material is required to be repellant to each two adjacent cylindrical rotary vanes; the rotor and the cylindrical rotary vane are made of polytetrafluoroethylene or nylon material. The pump has the advantages that the temperature of the pump body can be reduced, the problems of lubrication and friction between any two main components can be solved, the operating efficiency can be improved, and the vibration and the noise of the system can be reduced. The pump can be applied to the oilgas recovery in a gas station, and can also be applied to the pumping of other low power consumption and small capacity medium.
Description
Technical field
The utility model relates to a kind of vacuum pump, is specifically related to a kind of rotary-vane vaccum pump.
Background technique
Add in the gasoline process and can discharge gasoline vapor in a large number at automobile from reservoir port, befouling environment not only, and cause the ample resources waste, bring potential safety hazard simultaneously.In the existing most orthodox car refueling processes of China, do not implement the oil gas recovery technology.In existing oil gas recovery plant, oil gas reclaiming type vacuum pump is one of nucleus equipment of oil gas recovery plant.Existing oil gas recovery vacuum pump has two kinds of reciprocating piston type and rotary sheet types, and wherein the structure of rotary sheet type oil gas recovery vacuum pump and principle are as shown in Figure 3.This sliding vane rotary pump mainly is made up of parts such as the pump housing 13, blade 14, rotor 15, spring 16, outlet valves 17.Its structure be utilize be contained in prejudicially the rotor 15 in the pump housing 13 chambeies and in rotor, slide be close to two blades 14 of the pump housing 13 inwalls by spring 16 tension force and centrifugal force, two blades are becoming three cavitys by rotor 15, the pump housing 13 inner chambers and the selenodont separated by spaces that gland is surrounded, the rotation of the rotor of installing by off-centre 15, constantly change the size of the volume and the pressure of these three cavitys, thereby reach the purpose of continuous air extraction.
In practical work process, there is following point in existing rotary-vane vaccum pump:
1, owing to produces violent sliding friction between the blade and the pump housing, when long-play, can produce a large amount of heats, make rotor and blade produce certain thermal expansion, in case this thermal expansion causes the gap of rotor and blade to disappear, the locking of two parts possibility is no longer worked pump.
2, maximum problem is a lubrication problem between the moving element in the oil gas recovery vacuum pump running.This is because gasoline is washing agent with respect to conventional grease, and after operation a period of time, lubricating grease has been cleaned up by gasoline soon at vacuum pump.Adopt lubricating grease can not reduce the friction factor of moving element effectively for a long time.In case the lubricated disappearance between the parts, the frictional force between the parts can raise rapidly, and frictional force is converted to heat.Therefore, in traditional oil gas recovery vacuum pump course of working, must stay the size of coming the absorbing member thermal expansion to produce in enough gaps between moving element increases.Gap between the moving element is too big, can make system's gas leakage, reduces the degree of vacuum of vacuum pump, thereby reduces the exhaust capacity of vacuum pump.Simultaneously, because frictional force is excessive, also greatly reduce the driving efficient of motor.For reaching higher exhaust capacity, need the power of expanded motor, also reduce greatly the working life of pump.
3, the friction between the blade and the pump housing causes serious wear, can destroy sealing, strengthens the gap between moving element, produces gas leakage, reduces the degree of vacuum of vacuum pump, thereby reduces the exhaust capacity of vacuum pump, influences working efficiency.
4, because moving element is metalwork, vibrations that the friction-produced between them is a large amount of and noise cause environmental pollution.
The model utility content
For fretting wear, the vibrating noise that overcomes existing rotary-vane vaccum pump existence, the deficiency that influences working efficiency, the purpose of this utility model is: a kind of vacuum pump is provided, this vacuum pump can reduce the temperature of the pump housing, solve the lubricated and friction problem between pump housing critical piece, increase work efficiency, and reduce the vibrations and the noise of system.
The technological scheme that its technical problem that solves the utility model vacuum pump adopts is as follows:
A kind of vacuum pump, it comprises the pump housing, pump cover, rotor, blade, main shaft and necessary electromotor, the pump housing and pump cover are by being threaded, the main shaft of motor inserts in the pump housing, rotor is nested on the main shaft, determine the eccentric position of rotor in the pump housing by the locating stud on the pump housing, blade is installed on the rotor, has the air inlet mouth of pipe and the mouth of pipe of giving vent to anger at an end of the pump housing.Described blade is provided with several, is cylindrical blade, is installed in respectively in the U type groove of opening along rotor radial, and can freely rotates and move in this groove, and the axial two ends of cylindrical blade are clipped in respectively between the bottom surface of the pump cover and the pump housing; Each cylindrical blade axially respectively be inlaid with a permanent-magnet material, the installation direction of permanent-magnet material should repel each other with every adjacent cylindrical blade and be as the criterion; Described rotor and cylindrical blade adopt teflon or nylon material to make.
On the circumference of rotor between per two cylindrical blades, respectively have a stria, the width＜3mm of this stria.
Compared with prior art, the utlity model has following beneficial effect:
1, the friction between the reduction pump housing and blade improves the lubricated of system
The utility model replaces traditional straight-plate-type blade with columniform blade, makes between the blade and the pump housing to become rolling friction by sliding friction, thereby can reduce the friction of the two, reduce wear, improve the tightness between member, reduce gas leakage, increase work efficiency.The utility model employing teflon or nylon are as the material of rotor and cylindrical blade in addition, the friction factor of teflon is very little, is one of best solid lubricant, thereby can solve lubricating between moving element, the power of reducing friction, the working life of improving moving element.
2, reduce the heat of system, keep the normal operation of system
Owing on rotor, cut stria, for extendable room is provided between blade and rotor, can absorb the thermal expansion that produces owing to heat between rotor and blade, avoid system's locking, guarantee the normal operation of rotor.
3, reduce the vibrations and the noise of system
Because rotor and cylindrical blade are made by teflon, the density of teflon is less than metallic material, and no longer sends the noise of metal and metal bump and friction at the volley, and the vibrations of component movement and noise are significantly reduced.
4, can reduce the output power of drive motor
Because the utility model can solve the gas leakage problem of vacuum pump, improve the pumping efficiency of vacuum pump, thereby can effectively reduce the rotating speed of drive motor, thereby can reduce the output power of motor.
Description of drawings
Fig. 1 is the cylindrical blade structural representation of the utility model vacuum pump
Fig. 2 is the structural representation of the utility model vacuum pump
Fig. 3 is the structural representation of existing straight-plate-type sliding vane rotary vacuum pump
Among the figure, the 1. rotor 2. cylindrical blade 3. permanent-magnet materials 4. strias 5. pins 6. pin grooves 7. main shafts 8. pump housings 9. pump covers 10. seal rings 11. air inlet mouths of pipe 12. mouth of pipe 13. pump housings 14. blades 15. rotors 16. springs 17. outlet valves of giving vent to anger
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Figure 2 shows that an embodiment of the utility model vacuum pump, this embodiment's vacuum pump is to be used for the rotary-vane vaccum pump that oil gas reclaims, the pump housing 8 and pump cover 9 are connected by bolt, the oil gas sealing is realized by oil-resistant seal ring 10 in its structure slit, guarantees that oil gas can not leak out in the vacuum pump working procedure.Supporting drive motor adopts direct current anti-explosion motor (not drawing among the figure), can regulate motor speed according to oil and gas content required under the different operating modes by variable-frequency control technique, for system provides only rate of air sucked in required, reduces power consumption.The main shaft 7 of this direct current anti-explosion motor inserts in the pump housing 8, and rotor 1 is nested on the main shaft 7, transfers torque on the rotor 1 by the pin 5 in the pin 6, realizes rotor rotation.Determine the eccentric position of rotor in the pump housing by the locating stud on the pump housing.See also shown in Figure 1, present embodiment radially processes 5 equally distributed U type grooves rotor 1,5 cylindrical blades 2 are installed in respectively in these 5 U type grooves, and can in this groove, freely rotate and move, the axial two ends of cylindrical blade 2 are clipped in respectively between the bottom surface of the pump cover 9 and the pump housing 8, each cylindrical blade 2 axially respectively stud with a permanent-magnet material 3, in installation process, guarantee that every adjacent cylindrical blade 2 repels each other, rather than inhale mutually.Because the pump housing 8 is that iron material casting processing forms, cylindrical blade 2 tightly is fitted on the pump housing wall by permanent-magnet material 3.Rotor 1 and cylindrical blade 2 adopt teflon or nylon material to make.Leave the air inlet mouth of pipe 11 and 12, two mouth of pipe two ends of the mouth of pipe of giving vent to anger are processed with outside thread at pump housing wall one end, fixedly on the pump cover 9, the other end is connected with other pipelines an end, and vacuum pump is inserted in the oil gas recovery line system.Organic stand can be fixed on vacuum pump and motor on the frame of oilling machine inside on the motor.
Having a stria 4, the width＜3mm of this stria 4 between per two cylindrical blades on the rotor 1.The thermal expansion that these strias form in order to absorb rotor friction generates heat in rotary course and between the pump housing parts guarantees the normal operation of rotor.
The working procedure of the utility model vacuum pump is as follows:
With embodiment shown in Figure 1 is the example explanation.5 cylindrical blades are divided into A, B, C, D, five cavitys of E to the crescent-shaped space that surrounds between rotor, blade, the pump housing and the pump cover.When rotor rotated in a direction indicated by the arrow, the cavity A volume that communicates with the air inlet mouth of pipe constantly increased, and pressure constantly reduces, and when the pressure in the A cavity was lower than the pressure of being taken out in the container, pumped gas constantly was drawn into cavity A, was in breathing process this moment.The volume of C cavity reduces just gradually, and pressure constantly increases, and is in compression process, and the E cavity volume that communicates with the mouth of pipe of giving vent to anger further reduces, and pressure increases, when the pressure of gas when giving vent to anger pressure, compressed gas is constantly discharged from the mouth of pipe of giving vent to anger, and is reclaimed.In the continuous operation process of vacuum pump, the process of constantly carry out air inlet, compressing, give vent to anger realizes continuous air extraction.
The utility model is applicable to that the gas station carries out oil gas and reclaims, and also can be used for the extraction of other medium of low power consumption, small capacity.
Claims (4)
1, a kind of vacuum pump, it comprises the pump housing, pump cover, rotor, blade, main shaft and necessary electromotor, the pump housing and pump cover are by being threaded, the main shaft of motor inserts in the pump housing, rotor is nested on the main shaft, determine the eccentric position of rotor in the pump housing by the locating stud on the pump housing, blade is installed on the rotor, end at the pump housing has the air inlet mouth of pipe and the mouth of pipe of giving vent to anger, it is characterized in that: described blade is provided with several, is cylindrical blade, is installed in respectively in the groove of opening along rotor radial, and can in this groove, freely rotate and move, the axial two ends of cylindrical blade are clipped in respectively between the bottom surface of the pump cover and the pump housing; Each cylindrical blade axially respectively be inlaid with a permanent-magnet material, the installation direction of permanent-magnet material should repel each other with every adjacent cylindrical blade and be as the criterion; Described rotor and cylindrical blade adopt teflon or nylon material to make.
2, vacuum pump according to claim 1 is characterized in that: described necessary electromotor is the direct current anti-explosion motor.
3, vacuum pump according to claim 1 is characterized in that: on the circumference of rotor between per two cylindrical blades, respectively have a stria, the width＜3mm of this stria.
4, vacuum pump according to claim 1 is characterized in that: have 5 equally distributed U type grooves at rotor radial, 5 cylindrical blades are installed in respectively in these 5 U type grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201081063U CN201215086Y (en) | 2008-05-28 | 2008-05-28 | Vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201081063U CN201215086Y (en) | 2008-05-28 | 2008-05-28 | Vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201215086Y true CN201215086Y (en) | 2009-04-01 |
Family
ID=40520290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201081063U Expired - Fee Related CN201215086Y (en) | 2008-05-28 | 2008-05-28 | Vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201215086Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119360A (en) * | 2018-02-01 | 2018-06-05 | 王海容 | Roller rotary pump and its control method during for petroleum vapor recovery |
| CN110541826A (en) * | 2019-10-21 | 2019-12-06 | 太仓束捍机电科技有限公司 | Vacuum pump for vacuum beam welding machine |
-
2008
- 2008-05-28 CN CNU2008201081063U patent/CN201215086Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119360A (en) * | 2018-02-01 | 2018-06-05 | 王海容 | Roller rotary pump and its control method during for petroleum vapor recovery |
| CN110541826A (en) * | 2019-10-21 | 2019-12-06 | 太仓束捍机电科技有限公司 | Vacuum pump for vacuum beam welding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YANG XUN Free format text: FORMER OWNER: CHEN SHENGYUN Effective date: 20110909 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Xun Inventor before: Chen Shengyun |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CHEN SHENGYUN TO: YANG XUN |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110909 Address after: 100027 Beijing city Xicheng District Deshengmen Andrew 112 No. 1 West Gate 605 Patentee after: Yang Xun Address before: 100027 Beijing city Xicheng District Deshengmen Andrew 112 No. 1 West Gate 605 Patentee before: Chen Shengyun |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090401 Termination date: 20150528 |
|
| EXPY | Termination of patent right or utility model |